Knowledge base for software setup, errors, and daily tool work.

Fix Docker Nginx 502 Bad Gateway with MySQL

You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...

Fix Nginx Permission Denied on CentOS: A Practical Guide

You're setting up Nginx on CentOS and hitting a 'permission denied' error in the erro...

Chrome Memory High After Update: How to Fix

After a Chrome update, you might notice the browser using more memory than usual—slowing down you...

How to Allow Unrelated Histories in Git Merge

How to Fix Firefox Secure Connection Failed Error

When Firefox shows 'Secure Connection Failed' and won't load a site, it usually means...

Fix Chrome Black Screen on Nvidia GPU with Hardware Acceleration

If you're seeing a black screen in Chrome—especially when watching videos or scrolling—and yo...